City Hall claim ULEZ expansion has improved air quality in London
City Hall has claimed the ULEZ expansion has improved air quality in London.
It says roadside pollution in outer London was down an average of 3.5% on what it would have been without Ulez in the six months after the zone was extended last August.
It says roadside pollution in outer London was down an average of 3.5% on what it would have been without Ulez in the six months after the zone was extended last August.